Preparation of Pt-Ru-Ir nanoparticle catalysts on carbon black by a novel vapour deposition method is reported. Particle size as assessed by TEM is c.a. 2.5 nm with narrow distribution. Moreover, they are homogeneously dispersed on the substrate. The electrocatalytic activity of the particles towards methanol electrooxidation was investigated by cyclic voltammetry, chronoamperometry at constant potential and adsorbed CO-stripping voltammetry. It was found that these catalysts possess outstanding activity for methanol electrooxidation. This is over one order of magnitude higher than in state of art catalysts. The novel catalysts have the potential to bear significant performance improvement of DMFCs.
|Autori interni:||TRICOLI, VINCENZO|
|Autori:||P. SIVAKUMAR; V. TRICOLI|
|Titolo:||Pt-Ru-Ir Nanoparticles Prepared by Vapor Deposition as a Very Efficient Anode Catalyst for Methanol Fuel Cells|
|Anno del prodotto:||2006|
|Appare nelle tipologie:||1.1 Articolo in rivista|